Even though we Dutch people basically get born with bicycles attached to our asses, I'm not that into biking.
I'm a walker myself, though I do ride on random occasions anywhere between 20-50km for a random amount of times a year. Just because why not. However being Dutch, we do cycle everywhere at any time, and I do too; to the bus, to do grocery shopping, run errands, visit a friend, you name it. But there's no way to know how much that adds up to.